562 RALPH ARNOLD 
iron stains seen on the west face of the rock in this view, and in Fig. 3, 
emanate from the cracks under the scales. 
A view of Eagle Rock from the south is shown in Fig. 2. This 
picture presents a profile of its west face, showing the solid joint 
between overhanging block and nearly perpendicular rock face; 
also the rough, pebble-covered south wall of the dome. The top of 
the rock conforms approximately to the dip of the conglomerate, and 
Fic. 2.—Eagle Rock, viewed from the south, showing bedding in the conglomerate, 
and a profile of the west face. 
is devoid of vegetation with the exception of a patch or two of moss 
and a few straggling shrubs. 
The north side of the dome, shown in Fig. 3, is penetrated by two 
caves which have been formed by the weathering-out of the incoherent 
portions of the rock. These caves are the result of phenomena 
different from those resulting in the scales and dome surfaces. The 
walls of the caves are concave inward, somewhat softer than the 
exposed surfaces of the dome; the bottoms of the caves slope gently 
outward. Beneath the caves will be noticed several arches similar 
in a general way to the great arch. ‘These are of various sizes as 
